The young man is ______ Edison in ourfactory and he has made ______ number of important inventions over the years

下列句子中，没有语病的一项是：

If you don’t know how to spell the new words, please_____in the dictionary.

What made you so upset?— _____ three tickets to the pop music concert. [ ]

Historically, __________main material for making tables has beenwood, but__________metal and stone have also been used.